Bicycle seatpost clamp



FIG. 1 is a side view of a bicycle seatpost clamp showing my new design, the broken lines illustrate part of a saddle rail and form no part of the claimed design;

FIG. 2 is a partial side view thereof with the rear end of the clamp elevated;

FIG. 3 is a partial side view thereof with the front end of the clamp elevated;

FIG. 4 is a partial front view thereof;

FIG. 5 is a partial rear view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view of a bicycle seatpost clamp.

The views of FIGS. 2-5 are shown broken away for ease of illustration. 

The ornamental design for a bicycle seatpost clamp, as shown and described. 